Hatcher¶

class pyslm.hatching.Hatcher¶

Bases: pyslm.hatching.hatching.BaseHatcher

Provides a generic SLM Hatcher ‘recipe’ with standard parameters for defining the hatch across regions. This includes generating multiple contour offsets and then a generic hatch infill pattern by re-implementing the BaseHatcher.hatch() method. This class may be derived from to provide additional or customised behavior.

Attributes Summary

`contourOffset`	The contour offset is the distance between the contour or border scans
`hatchAngle`	The base hatch angle used for hatching the region expressed in degrees \([-180,180]\)
`hatchDistance`	The distance between adjacent hatch scan vectors
`hatchSortMethod`	The hatch sort method used once the hatch vectors have been generated
`hatchingEnabled`	If the internal hatch region should be processed (default: True)
`layerAngleIncrement`	An additional offset used to increment the hatch angle between layers in degrees.
`numInnerContours`	The total number of inner contours to generate by offsets from the boundary region.
`numOuterContours`	The total number of outer contours to generate by offsets from the boundary region.
`scanContourFirst`	Determines if the contour/border vectors `LayerGeometry` are scanned first before the hatch vectors.
`spotCompensation`	The spot (laser point) compensation factor is the distance to offset the outer-boundary and other internal hatch features in order to factor in the exposure radius of the laser.
`volumeOffsetHatch`	An additional offset may be added (positive or negative) between the contour/border scans and the internal hatching for the bulk volume.

Methods Summary

hatch(boundaryFeature)

Generates a series of contour or boundary offsets along with a basic full region internal hatch.

Attributes Documentation

contourOffset¶

The contour offset is the distance between the contour or border scans

Return type:: float

hatchAngle¶

The base hatch angle used for hatching the region expressed in degrees \([-180,180]\)

Return type:: float

hatchDistance¶

The distance between adjacent hatch scan vectors

Return type:: float

hatchSortMethod¶: The hatch sort method used once the hatch vectors have been generated

hatchingEnabled¶

If the internal hatch region should be processed (default: True)

Return type:: bool

layerAngleIncrement¶

An additional offset used to increment the hatch angle between layers in degrees. This is typically set to 66.6 \(^\circ\) per layer to provide additional uniformity of the scan vectors across multiple layers. By default this is set to 0.0

Return type:: float

numInnerContours¶

The total number of inner contours to generate by offsets from the boundary region.

Return type:: int

numOuterContours¶

The total number of outer contours to generate by offsets from the boundary region.

Return type:: int

scanContourFirst¶

Determines if the contour/border vectors LayerGeometry are scanned first before the hatch vectors. By default this is set to False.

Return type:: bool

spotCompensation¶

The spot (laser point) compensation factor is the distance to offset the outer-boundary and other internal hatch features in order to factor in the exposure radius of the laser.

Return type:: float

volumeOffsetHatch¶

An additional offset may be added (positive or negative) between the contour/border scans and the internal hatching for the bulk volume.

Return type:: float

Methods Documentation

hatch(boundaryFeature)¶

Generates a series of contour or boundary offsets along with a basic full region internal hatch.

Parameters:: boundaryFeature – The collection of boundaries of closed polygons within a layer.
Return type:: Optional[Layer]
Returns:: A Layer object containing a list of LayerGeometry objects generated